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ALT-N MDaemon POP Server < 9.06 USER / APOP Command Overflow

Medium

Synopsis

The remote host is vulnerable to a buffer overflow.

Description

A buffer overflow vulnerability has been reported for MDaemon. The vulnerability is due to inadequate bounds checking one some POP server commands. Namely, 'USER' and 'APOP'. An attacker can exploit this vulnerability by submitting a very large values to these commands on the POP server. This will cause the MDaemon service to crash when attempting to process the command. Successful exploitation would lead to the attacker executing arbitrary code on the remote server.

Solution

Upgrade to version 9.06 or higher.